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装配式型钢复合墙抗震性能数值模拟及参数拓展分析

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为研究装配式型钢复合墙抗震性能的影响因素,以其拟静力试验为研究对象,利用ABAQUS和OpenSees软件对墙体进行了数值模拟.在ABAQUS中,采用实体单元建立了模型,进行了水平单调加载.结果表明,各试件实际破坏位置与应力云图破坏位置相同,计算所得的荷载-位移曲线与试验结果比较吻合.在OpenSees中,将墙体简化为刚架-斜压杆模型,采用纤维单元建立了模型,进行了低周往复加载,并与实测滞回曲线对比验证了模型的合理性;以试件SCW-1为基础模型对关键参数进行了拓展分析.结果表明:轴压比、边框柱含钢率的增大使墙体抗侧刚度和承载力增加,但位移延性和耗能能力略有降低;相反,剪跨比增大导致墙体的抗侧刚度和承载力降低,位移延性和耗能能力逐渐增大.
Numerical simulation and parameter expansion analysis of seismic performance of prefabricated steel composite wall
In order to study the factors affecting the seismic performance of the prefabricated steel composite wall,its pseudo-static test was taken as the research object,and the ABAQUS and OpenSees software were used to simulate the wall numerically.In ABAQUS,a solid unit was used to build a model,and the horizontal monotone loading was carried out.The results show that the actual failure position of each specimen is the same as that of the stress nephogram,and the calculated load-displacement curve is in good agreement with the test result.In OpenSees,the wall was simplified into a rigid frame-diagonal bar model,and the fiber element was used to build the model,and the low cycle reciprocating loading was carried out.The rationality of the model was verified by comparing with the measured hysteresis curve.Based on specimen SCW-1,the key parameters were further analyzed.The results show that the lateral stiffness and bearing capacity of the wall increase with the increase of axial compression ratio and steel content of the frame column,but the displacement ductility and energy dissipation capacity decrease slightly.On the contrary,with the increase of shear span ratio,the lateral stiffness and bearing capacity of the wall decrease,and the displacement ductility and energy dissipation capacity increase gradually.

prefabricated steel composite wallABAQUSOpenSeesfiber modelseismic performance

王伟

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中铁第一勘察设计院集团有限公司,陕西西安 710043

装配式型钢复合墙 ABAQUS OpenSees 纤维模型 抗震性能

2024

四川建筑科学研究
四川省建筑科学研究院

四川建筑科学研究

影响因子:0.422
ISSN:1008-1933
年,卷(期):2024.50(6)